Relative intensity noise induced by four-wave mixing in the case of two-wave transmission in an optical fiber |
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| Authors: | Wei Chen |
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| Affiliation: | Department of Optic Information Science and Technology, College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha, Hunan 410073, PR China |
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| Abstract: | Four-wave mixing (FWM) is a significant nonlinear effect in wavelength division multiplexing (WDM) fiber-optic systems. For two-wave transmission, it is easily found that the FWM noise power decreases with frequency spacing and increases with signal power. However, the variation of relative intensity noise (RIN) with frequency spacing and signal power is only 2 dB at most. The intensity fluctuations induced by the energy exchange between the FWM generated new waves and the original ones are trivial and the influence of FWM on RIN can be neglected. It is also found that the increase of RIN with signal power is mainly attributed to stimulated Brillouin scattering (SBS) rather than FWM. |
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| Keywords: | Four-wave mixing Relative intensity noise Stimulated Brillouin scattering |
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